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Cast resin transformer ( Dry type transformer)

These transformers are made with a magnetic core from laminated grain-oriented silicon steel. Additionally, HV winding can also be wound from insulated by an inter-layer film, pre-impregnated with heat-activated epoxy resin. The ends of the windings are protected and insulated using Class F materials.  With outstanding resistance to harsh industrial atmospheres, excellent dielectric withstand and very good resistance to short-circuit conditions are ideal for industrial and commercial use.

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隐藏域元素占位

  • Specification

    These transformers are made with a magnetic core from laminated grain-oriented silicon steel. Additionally, HV winding can also be wound from insulated by an inter-layer film, pre-impregnated with heat-activated epoxy resin. The ends of the windings are protected and insulated using Class F materials.  With outstanding resistance to harsh industrial atmospheres, excellent dielectric withstand and very good resistance to short-circuit conditions are ideal for industrial and commercial use.


    Features and Advantages

    • Guaranteed against fire hazards.
    • Thermal insulation Class F
    • Resistance to high humidity levels > 95%
    • Naturally cooled (AN) or air forced (AF) on request
    • Safe and environment friendly
    • Low maintenance cost

    Parameters

    SCB11series 35KVcast resin transformer (dry type transformer)


    Code and implication

    Model

    Rated power
    (kVA)

    Rated primary voltage
    (kV)

    Tapping
    (%)

    Rated secondary voltage
    (no-load)
    (kV)

    Vector group

    No-load losses
    (W)

    Load losses
    (W)

    No-load current
    (%)

    Rated impedance
    (%)

    SCB11-50

    50

    35
    38.5

    ±2×2.5
    ±5

    0.4

    Yyn0
    Dyn11

    450

    1420

    2.3

    6.0

    SCB11-100

    100

    35
    38.5

    ±2×2.5
    ±5

    0.4

    Yyn0
    Dyn11

    630

    2090

    2.0

    6.0

    SCB11-160

    160

    35
    38.5

    ±2×2.5
    ±5

    0.4

    Yyn0
    Dyn11

    790

    2810

    1.5

    6.0

    SCB11-200

    200

    35
    38.5

    ±2×2.5
    ±5

    0.4

    Yyn0
    Dyn11

    880

    3320

    1.5

    6.0

    SCB11-250

    250

    35
    38.5

    ±2×2.5
    ±5

    0.4

    Yyn0
    Dyn11

    990

    3800

    1.3

    6.0

    SCB11-315

    315

    35
    38.5

    ±2×2.5
    ±5

    0.4

    Yyn0
    Dyn11

    1170

    4510

    1.3

    6.0

    SCB11-400

    400

    35
    38.5

    ±2×2.5
    ±5

    0.4

    Yyn0
    Dyn11

    1370

    5410

    1.1

    6.0

    SCB11-500

    500

    35
    38.5

    ±2×2.5
    ±5

    0.4

    Yyn0
    Dyn11

    1620

    6650

    1.1

    6.0

    SCB11-630

    630

    35
    38.5

    ±2×2.5
    ±5

    0.4

    Yyn0
    Dyn11

    1860

    7690

    1.0

    6.0

    SCB11-800

    800

    35
    38.5

    ±2×2.5
    ±5

    0.4

    Yyn0
    Dyn11

    2160

    9120

    1.0

    6.0

    SCB11-1000

    1000

    35
    38.5

    ±2×2.5
    ±5

    0.4

    Yyn0
    Dyn11

    2430

    1040

    0.75

    6.0

    SCB11-1250

    1250

    35
    38.5

    ±2×2.5
    ±5

    0.4

    Yyn0
    Dyn11

    2830

    1270

    0.75

    6.0

    SCB11-1600

    1600

    35
    38.5

    ±2×2.5
    ±5

    0.4

    Yyn0
    Dyn11

    3240

    1540

    0.75

    6.0

    SCB11-2000

    2000

    35
    38.5

    ±2×2.5
    ±5

    0.4

    Yyn0
    Dyn11

    3820

    1820

    0.75

    6.0

    SCB11-2500

    2500

    35
    38.5

    ±2×2.5
    ±5

    0.4

    Yyn0
    Dyn11

    4450

    2180

    0.75

    6.0

    SCB11Series 10KVTransformer


    Code and implication

     

    Code and implication


    Rated power
    (kVA)

    Rated primary voltage
    (kV)

    Tapping
    (%)

    Rated secondary voltage
    (no-load)
    (kV)

    Vector group

    No-load losses
    (kW)

    Load losses at different insulation classes

    No-load current
    (%)

    Rated impedance
    (%)

    130℃(B)(100℃)

    155℃(F)(120℃)

    180℃(H)(145℃)

    30

    6/6.3/6.6/10/10.5/11

    ±2.5
    ±5

    0.4

    Dyn11
    Yyn0

    0.19

    0.67

    0.71

    0.76

    2

    4

    50

    6/6.3/6.6/10/10.5/11

    ±2.5
    ±5

    0.4

    Dyn11
    Yyn0

    0.27

    0.94

    1

    1.07

    2

    4

    80

    6/6.3/6.6/10/10.5/11

    ±2.5
    ±5

    0.4

    Dyn11
    Yyn0

    0.37

    1.29

    1.38

    1.48

    1.5

    4

    100

    6/6.3/6.6/10/10.5/11

    ±2.5
    ±5

    0.4

    Dyn11
    Yyn0

    0.4

    1.48

    1.57

    1.69

    1.5

    4

    125

    6/6.3/6.6/10/10.5/11

    ±2.5
    ±5

    0.4

    Dyn11
    Yyn0

    0.47

    1.74

    1.85

    1.98

    1.3

    4

    160

    6/6.3/6.6/10/10.5/11

    ±2.5
    ±5

    0.4

    Dyn11
    Yyn0

    0.54

    2

    2.13

    2.28

    1.3

    4

    200

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    0.62

    2.37

    2.53

    2.71

    1.1

    4

    250

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    0.72

    2.59

    2.76

    2.96

    1.1

    4

    315

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    0.88

    3.27

    3.47

    3.73

    1

    4

    400

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    0.98

    3.75

    3.99

    4.28

    1

    4

    500

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    1.16

    4.59

    4.88

    5.23

    1

    4

    630

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    1.34

    5.53

    5.88

    6.29

    0.85

    4

    630

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    1.3

    5.61

    5.96

    6.40

    0.85

    6

    800

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    1.52

    6.55

    6.96

    7.46

    0.85

    6

    1000

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    1.77

    7.65

    8.13

    8.76

    0.85

    6

    1250

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    2.09

    9.1

    9.69

    10.3

    0.85

    6

    1600

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    2.45

    11.1

    11.7

    12.5

    0.85

    6

    2000

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    3.05

    13.6

    14.4

    15.5

    0.7

    6

    2500

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    3.6

    16.1

    17.1

    18.4

    0.7

    6

    1600

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    2.45

    12.2

    12.9

    13.9

    0.85

    8

    2000

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    3.05

    15

    15.9

    17.1

    0.7

    8

    2500

    6/6.3/6.6/10/10.5/11

    ±2×2.5
    ±5

    0.4

    Dyn11
    Yyn0

    3.6

    17.7

    18.8

    20.2

    0.7

    8


    Dimensions

    Dimensions

    Note: Dimensions are for guidance and reference only and are NON CONTRACTUAL.


    Logistic and service

    Once the transformer is successfully tested and qualified, the product is ready for shipping either by truck or sea-freight.

    As a manufacturer, we understand the relevance that logistics represents to our customers. This is one of the reasons why Aisite has developed a large and qualified net work of suppliers that have the same values and targets.

    Aisite takes care of all official documentation, depending on final destinations and delivery terms.

    Different packaging for special applications or conditions:

    - Standard packing

    - Crate packing

    - Seaworthy packing


    Built for sturdiness and efficiency(Production process)

    The core

    The iron core forms the central element of every transformer. High-grade, cold-rolled metal sheets are precision-cut using computer-controlled machines to ensure compliance with even the smallest tolerances. The individual sheets are then assembled into cores using the step-lap technique by our veteran workers. In this way, weachieve an especially good flux distribution at the joints, resulting in exceptionally low losses and minimal no-load noise.

     

    s13


    Windings

    Transformer windings are subject to extremely high electrical and mechanical stresses and must therefore be protected. The transformer windings of our transformers are made of copper or aluminum. Low-voltage windings are made fromfoil, and high-voltage windings are manufactured from round orstripprofile wire. The use of insulating paper partially coated with epoxy resin (diamond-dotted paper) bonds the winding into a compact block during the drying process and additionally increases the short-circuit capacity.

     

    Windings


    Encapsulation process

    The encapsulation process is a key stage within the manufacturing process. Encapsulation is carried out under the most rigorous conditions in order to ensure optimum insulating and mechanical characteristics. The resin mix is prepared in a continuously monitored mixing plant where all the components are mixed together just before the encapsulation process. Inside the vacuum casting chamber, the resin is introduced into the mould. The components are mixed together just before the encapsulation process, this ensures that the viscosity of the resin when poured in the moulds is very low, filling interstices and allowing the finished winding to reach the lowest level of partial discharge. Once the casting is finished the coils are placed into the curing oven for the resin gel to cure, and acquire the optimal final electrical and mechanical properties.

     

    Encapsulation process


    Final assembly

    The transformer’s core-and-coil assembly consists of the core, windings, and connecting cables.

    Final assembly

    Testing

    Ourtransformers are dispatched to the customer only after successfully passing the final inspection and testing. Ourfactory has a high-voltage test bay, where our veteranspecialists conduct a wide range of tests, from voltage tests and temperature-rise tests, to special tests for insulation resistance, partial discharge measurement, harmonics, and noise level. Short-circuit tests are performed in internationally recognized and approved institutes. Ourtests in accordance with the applicable standards and provides our customers with additional certificates on request.

    For laboratory- or on-site measurements of partial discharge at medium-and high voltage components according  GB/T 7354-2003, VDE 0434, IEC 60270, EN 50178, VDE 0884, IEC60747-5-5, UL 1577 and others.

    Testing

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